ML18348A630

Abnormal Occurrences 75-21 and 75-22. AO 75-21, Involved a Reduced Concentration of Boric Acid in the Safety Injection Tanks. AO-75-22, Involved the Failure of High-Pressure Safety Injection Valve MOV-3007

ML18348A630
Person / Time
Site:	Palisades
Issue date:	09/15/1975
From:	Slade G Consumers Power Co
To:	Baker K NRC/RGN-III
References
AO-75-21, AO-75-22
Download: ML18348A630 (4)

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REGION III 79' RG0SEVELT ROAD GLEN ELLYN, IL c/,o/.3/

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SUBJECT:

PALISADES PLANT 0 A&Nl9RMAl.

THIS IS TO INFORM YOU OF Twe ABNORMAL ©CCURRENCES WHICH TG0K PLACE AT THE PALISADES PLANT OVER THE LAST WEEKEND., THE FIRST "

INVOLVED A REDUCED CONCENTRATION CF ~GRIC ACID IN THE SAFETY w --**

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<Ftf.fbECTI©N TANKS.. THE CONCENTRATI©NS WERE M!OUT 20 FPM BEL@W ~le~ [f fr :~(J THOSE REQUIRED BY TECH SPECS.

THE SECGND OCCURRENCE INVOLVED THE FAILURE OF HIGHePRESSURE SAFETY INJECTION VALVE M@V-3007., FLOW CSULD N~T EE DEMONSTRATED THRGUGH THE VALVE; THEREFelRE, WE HAVE ALIGNfl1ENT SUCH THAT THE REDUNDANT HIGH-PRESSURE SAFETY INJECT ION SYSTEM IS BEING UT IL I ZED AS A REPLACEMENT FOR THE NORMAL PATH. WE FEEL THAT THIS MEETS REQUIREMENTS ©F TECH SPECS. FURTHER INF©RMAIIIDN ON B0TH GF THESE eCCURRENCES WILL DE TRANSMITTED WITHIN THE REQUIRED 10 DAYSo

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PALISADES FLANT C~NSUMERS POWER CDMPANY

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799 ROOSEVELT ROAD DATE: DID. Cf// J?_ TI:n7. ___f(//r-ATTEMPT.S 'l-*o rELIVE:~:

GLEN ELLYN, ILL 60137 SUBJ- PALISADES PLANT ~ ABNORMAL OCCURRENCES 75-21 AND 75-22 THIS IS TO CONFIRM VERBAL NOTIFICATION TO MR K.R BAKER OVER THE PAST WEEKEND CONCERNING TWO ABNORMAL OCCURRENCES AT PALISADES FOLLOWS-

- BORON CONCENTRATION WAS FOUND TO BE ABOUT 1700 PPM IN

• u SIRW TANK AND SI BOTTLES AS OPPOSED TO TECHNICAL SPECIFICATIONS LIMIT OF 1720 PPM. ALL TANKS WERE BORATED TO ABOVE 1720 PPM WITHIN

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12 HOURS OF SAMPLE VERIFICATION~ CAUSE IS SPECULATIVE AT THIS TIME ~:

SINCE SIRW TANK WAS TOO FULL TO BE DILUTED FOLLOWING A 1770 PPM I I

SAMPLE TAKEN THREE DAYS PRIOR. INVESTIGATION CONTINUES AND DETAILS WILL FOLLOW IN 10 DAY REPORT *.

c AO 75 HIGH PRESSURE SAFETY INJECTION VALVE MOV-3007 WAS FOUND INOPERABLE WITH THE DISK APPARENTLY SEPARATED. WE HAVE SWITCHED TO THE REDUNDANT HPSI HEADER AND THE ASSOCIATED VALVES WHICH OPERATE AUTOMATICALLY ON SIS SIGNAL. THE VALVE WILL BE DISASSEMBLED AND

• FAILURE ANALYZED AT THE NEXT COLD SHUTDOWN.

J G LEWIS SF-1201 (RS-69)

CONSUMERS POWER COMPANY fl END JC *. I NNNN @

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UNITED STATES NUCLEAR REGULATORY COMMISSION OFFICE OF INSPECTION AND ENFORCEMENT REGION Ill 799 ROOSEVELT ROAD GLEN ELLYN, ILLINOIS 60137 A. IE Inspection Report No.

Transmittal Date Distribution: Distribution:

IE Chief, FS&EB IE Chief, FS&EB IE:HQ (5) lE:HQ (4)

DR Central Files L:D/D for Fuels & Materials Regulatory Standards (3) DR Central Files Licensing (13) IE Files IE Files IE Chief, M&PPB L:D/D for Reactor Project B. IE Inquiry Report No.

Transmittal Date Distribution: Distribution:

IE Chief, FS&EB IE Chief, FS&EB IE:HQ (5) IE:HQ DR Central Files DR Central Files Regulatory Standards (3) IE Files Licensing (13)

IE Files C. Incident Notification From: Consumers Power CmWcany *. SOB.

(Licensee & Docketo. (or Li:Se No.)

Transmittal Date Sept. 23, 1975

• Palisades Plant Distribution: Distribution:

IE Chief, FS&EB IE Chief, FS&EB IE:RQ (4) IE:HQ (4)

Licensing (4) L:D/D for Fuels & Materials DR Central Files DR Central Files IE Files IE Files